给出地球上两点的经纬度，可以得到两点间的球面距离。有点儿简单的小程序。-2:00 on the planet is given the latitude and longitude, I can get two points away from the spherical. The small bit simple procedures.

用于计算从两地球经纬度之间的距离,其核心是计算赤道曲率和极曲率.-Used to calculate the latitude and longitude from both the distance between the Earth and its core is the calculation of the equatorial and polar curvature curvature.